Liquid crystal display having opaque portions on the electrodes

Abstract

Disclosed is a matrix type liquid crystal display device comprising a column-and-line arrangement of pixels and a grating pattern which masks the spaces between adjacent pixels, thereby improving the contrast of the whole matrix display.

What is claimed is: 
     
       1. A "normally white" liquid crystal display device comprising: a first transparent substrate having a plurality of transparent electrode columns formed thereon;   a second transparent substrate having a plurality of transparent electrode lines formed thereon; and   a liquid crystal disposed between said first and second transparent substrates, said transparent electrode columns of said first transparent substrate facing said transparent electrode lines of said second transparent substrate, said electrode columns and said electrode lines being orthogonal to each other, thus forming a plurality of picture elements in the form of a matrix, wherein said transparent electrode columns are provided with a plurality of nonconnected horizontal conductive light shielding bars disposed at equal distances and said transparent electrode lines are provided with a plurality of nonconnected longitudinal conductive light shielding bars disposed at equal distances to mask the spaces between adjacent said picture elements in said matrix when said first and second transparent substrates are overlapped.   
     
     
       2. A "normally white" liquid crystal display device according to claim 1 wherein said horizontal and vertical light shielding bars are composed of a metal film. 
     
     
       3. A "normally white" liquid crystal display device according to claim 2 wherein said metal film is of chromium. 
     
     
       4. A "normally white" liquid crystal display device according to claim 2 wherein said metal film is of nickel phosphor. 
     
     
       5. A "normally white" liquid crystal display device according to claim 1 wherein each said transparent electrode column and line further comprises a ladder-shaped conductor having longitudinal conductive bars extending along opposite sides of each said transparent electrode column and line and cross-conductive bars connecting said longitudinal conductive bars. 
     
     
       6. A "normally white" liquid crystal display device according to claim 5 wherein opposite said longitudinal bars of said ladder-shaped conductor are formed on the opposite longitudinal edges of each said transparent electrode column on said first transparent substrate, and said cross bars of said ladder-shaped conductor are formed on each transparent electrode column in registration with each latitude space between adjacent transparent electrode lines on said second transparent substrate. 
     
     
       7. A "normally white" liquid crystal display device according to claim 1 wherein each said transparent electrode column has an enlarged and aperture-made terminal, and each said transparent electrode line has an enlarged and aperture-made terminal. 
     
     
       8. A "normally white" liquid crystal display device according to claim 7 wherein said enlarged and aperture-made terminal is composed of an electrically conductive metal oxide film. 
     
     
       9. A "normally white" liquid crystal display device according to claim 7 wherein said enlarged and aperture-made terminal is composed of nickel film. 
     
     
       10. A "normally white" liquid crystal display device according to claim 7 wherein said enlarged and aperture-made terminal is composed of chromium film.